Δύο γὰρ, ἐπιστήμη τε καὶ δόξα, ὧν τὸ μὲν ἐπίστασθαι ποιέει, τὸ δὲ ἀγνοεῖν → Two different things are science and belief: the one brings knowledge, the other ignorance
roost on a perch: Ar. ἐπὶ ξυλοῦ καθεύδειν (Nubes 1431).
P. and V. καθῆσθαι, καθίζειν, Ar. and V. ἕζομαι; see settle.
perch upon: Ar. ἐφέζεσθαι (dat.).
